IEC 62899-202-2016 "Printing electronics. Part 202: Materials. Electric conductive inks" is an international standard that defines the terminology of electric conductive inks in the field of printing electronics and specifies a standard method for characterizing and evaluating electric conductive inks and the conductive layers they make. The standard applies to a variety of electric conductive inks, including metal-based inks such as silver and copper, and organic conductive polymer inks. It covers the physical properties of electric conductive ink (such as viscosity, drying time), electrical conductivity (such as resistivity, conductive Stability) and environmental adaptability (such as temperature and Humidity change). Through standardized test methods, the standard provides a unified technical specification for the development, production and application of electric conductive ink, and promotes the industrialization of printing electronic technology.